What is the image and preimage of a function and how to write it
The image of a function sounds complicated but it's not as bad as you think.
It's really just the mapping of an element in one set to another element in another set.
The pre-image is then the reverse (or inverse) of that same process - all of this is explained in the video above.
Timestamps
00:00:00 Introduction
00:00:28 Example Function to Demonstrate Image and Pre-image
00:01:34 Image and Pre-Image
You may also find some useful reading from this blog article on this topic: https://gowers.wordpress.com/2011/10/...
Remember - it's never too late!
Cheers,
Steve
Credit :
Timestamps : Mikhael Marpaung